Patents by Inventor Mathias Ibert

Mathias Ibert has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9475786
    Abstract: A method for selective hydrogenation of furan-2,5-dialdehyde (DFF) into 2,5-di(hydroxymethyl)furan (DHMF) and into 2,5-di(hydroxymethyl)tetrahydrofuran (DHMTHF). In relation to the prior art, which uses C6 sugars or 5-hydroxymethyl furaldehyde (5-HMF) as raw materials, the method can be performed at low temperatures (lower than 120° C., preferably 80° C.), while consuming low amounts of catalyst relative to the initial reagent (in particular less than 5%, preferably less than 2% relative to the weight of the reagent). The heterogeneous catalyst used can also be recycled from one reaction to another. Finally, the choice of experimental conditions enables the selective formation of DHMF or DHMTHF.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: October 25, 2016
    Assignee: ROQUETTE FRERES
    Inventors: Mathias Ibert, Flora Chambon, Laurent Dambrine
  • Patent number: 9388152
    Abstract: A method for synthesizing 2,5-furandicarboxylic acid (FDCA) from furan-2,5-dialdehyde (DFF). The method is industrially applicable due to the simplicity and availability of the reagents used, and due to the experimental conditions on which the method is based: the method requires low temperatures and enables a reaction under atmospheric pressure, the reaction times being relatively short. Furthermore, the method does not lead to the formation of salts that need to be treated downstream from the method, and the catalytic ratio relative to the initial product is particularly low.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: July 12, 2016
    Assignee: ROQUETTE FRERES
    Inventors: Mathias Ibert, Flora Chambon, Laurent Dambrine
  • Patent number: 9365531
    Abstract: A method for oxidizing 5-hydroxymethyl furaldehyde, includes at least one step of oxidation in the presence of an organic acid, a nitroxyl radical, an oxygen source, and an oxygen transfer agent.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: June 14, 2016
    Assignee: ROQUETTE FRERES
    Inventors: Laurent Dambrine, Mathias Ibert
  • Patent number: 9346819
    Abstract: A simple, low cost, environmentally friendly and sustainable process for the production of internal dehydration products of hydrogenated sugar, implementing trivalent metal phosphate (metal (III) phosphates) as catalysts during the dehydratation step.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: May 24, 2016
    Assignee: ROQUETTE FRERES
    Inventors: Mathias Ibert, Herve Wyart, Wolfgang Holderich, Oana-Alice Rusu P.
  • Patent number: 9334287
    Abstract: Dianhydrohexitol pellets, whose fluidity is preserved even after lengthy storage, include between 90% and 100%, preferably between 95% and 100%, and more preferentially between 97% and 100% of dianhydrohexitols by weight, on a dry weight basis, and have the particularity of not being subject to caking. A process for preparing the dianhydrohexitol pellets is also described.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: May 10, 2016
    Assignee: ROQUETTE FRERES
    Inventors: Mathias Ibert, Jerome Saint Pol, Herve Wyart
  • Patent number: 9321783
    Abstract: A method for preparing a dialkyloxydianhyrohexitol (dimethylisosorbide) composition by etherification of dianhydrohexitol (isosorbide). The aim is to achieve a “clean” method that avoids the use of a methylation agent such as dimethyl sulfate or methyl chloride, which generates stoechiometric quantities of salts, or expensive dialkyl-carbonates, wherein only one of the two methyl groups participates in the preparation of mixed isosorbide ethers. The method involves using at least one O-alkylation agent and a catalyst including an acid or an acid salt, preferably a catalyst having Lewis or BrØnsted acid properties. A device for carrying out the method wherein the device includes a vaporization oven and a reaction oven is also described.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: April 26, 2016
    Assignees: ROQUETTE FRERES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE-CNRS, UNIVERSITE CLAUDE BERNARD LYON 1
    Inventors: Mathias Ibert, Nadine Essayem, Cyril Feche, Alain Perrard
  • Publication number: 20160083310
    Abstract: A method for improving the stability of compositions of a product for internal dehydration of a hydrogenated sugar, in particular an isosorbide composition, the method involving the use of monoethanolamine, diethanolamine, triethanolamine and the mixtures thereof as a stabilization agent. The resulting compositions and their various uses thereof are also described.
    Type: Application
    Filed: April 30, 2014
    Publication date: March 24, 2016
    Inventors: Mathias IBERT, Herve WYART, Patrick FUERTES
  • Publication number: 20150361086
    Abstract: Dianhydrohexitol pellets, whose fluidity is preserved even after lengthy storage, include between 90% and 100%, preferably between 95% and 100%, and more preferentially between 97% and 100% of dianhydrohexitols by weight, on a dry weight basis, and have the particularity of not being subject to caking. A process for preparing the dianhydrohexitol pellets is also described.
    Type: Application
    Filed: August 25, 2015
    Publication date: December 17, 2015
    Inventors: Mathias IBERT, Jerome SAINT POL, Herve WYART
  • Patent number: 9163031
    Abstract: Dianhydrohexitol pellets, whose fluidity is preserved even after lengthy storage, include between 90% and 100%, preferably between 95% and 100%, and more preferentially between 97% and 100% of dianhydrohexitols by weight, on a dry weight basis, and have the particularity of not being subject to caking. A process for preparing the dianhydrohexitol pellets is also described.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: October 20, 2015
    Assignee: ROQUETTE FRERES
    Inventors: Mathias Ibert, Jerome Saint Pol, Herve Wyart
  • Publication number: 20150274687
    Abstract: A method for synthesizing 2,5-furandicarboxylic acid (FDCA) from furan-2,5-dialdehyde (DFF). The method is industrially applicable due to the simplicity and availability of the reagents used, and due to the experimental conditions on which the method is based: the method requires low temperatures and enables a reaction under atmospheric pressure, the reaction times being relatively short. Furthermore, the method does not lead to the formation of salts that need to be treated downstream from the method, and the catalytic ratio relative to the initial product is particularly low.
    Type: Application
    Filed: September 26, 2013
    Publication date: October 1, 2015
    Inventors: Mathias Ibert, Flora Chambon, Laurent Dambrine
  • Publication number: 20150252015
    Abstract: A method for selective hydrogenation of furan-2,5-dialdehyde (DFF) into 2,5-di(hydroxymethyl)furan (DHMF) and into 2,5-di(hydroxymethyl)tetrahydrofuran (DHMTHF). In relation to the prior art, which uses C6 sugars or 5-hydroxymethyl furaldehyde (5-HMF) as raw materials, the method can be performed at low temperatures (lower than 120° C., preferably 80° C.), while consuming low amounts of catalyst relative to the initial reagent (in particular less than 5%, preferably less than 2% relative to the weight of the reagent). The heterogeneous catalyst used can also be recycled from one reaction to another. Finally, the choice of experimental conditions enables the selective formation of DHMF or DHMTHF.
    Type: Application
    Filed: September 26, 2013
    Publication date: September 10, 2015
    Inventors: Mathias Ibert, Flora Chambon, Laurent Dambrine
  • Publication number: 20150203507
    Abstract: A method for preparing a dialkyloxydianhyrohexitol (dimethylisosorbide) composition by etherification of dianhydrohexitol (isosorbide). The aim is to achieve a “clean” method that avoids the use of a methylation agent such as dimethyl sulfate or methyl chloride, which generates stoechiometric quantities of salts, or expensive dialkyl-carbonates, wherein only one of the two methyl groups participates in the preparation of mixed isosorbide ethers. The method involves using at least one O-alkylation agent and a catalyst including an acid or an acid salt, preferably a catalyst having Lewis or BrØnsted acid properties. A device for carrying out the method wherein the device includes a vaporization oven and a reaction oven is also described.
    Type: Application
    Filed: August 5, 2013
    Publication date: July 23, 2015
    Inventors: Mathias Ibert, Nadine Essayem, Cyril Feche, Alain Perrard
  • Publication number: 20150183796
    Abstract: A simple, low cost, environmentally friendly and sustainable process for the production of internal dehydration products of hydrogenated sugar, implementing trivalent metal phosphate (metal (III) phosphates) as catalysts during the dehydratation step.
    Type: Application
    Filed: August 7, 2013
    Publication date: July 2, 2015
    Inventors: Mathias Ibert, Herve Wyart, Wolfgang Holderich, Oana-Alice Rusu P.
  • Patent number: 9040654
    Abstract: A process for manufacturing a polycarbonate, having a glass transition temperature greater than or equal to 50° C., includes: a step (1) of introducing into a reactor a monomer of formula (I) and R1 and R2 being identical or different alkyl groups; a step (2) of introducing into the reactor at least one cyclic diol or a mixture of diols (B) including at least 20 mol % of cyclic diols; a subsequent step (3) of polycondensation via transesterification of the mixture of monomers including the monomers (A) and (B); a step (4) of recovering the polycarbonate formed during step (3).
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: May 26, 2015
    Assignee: ROQUETTE FRERES
    Inventors: Mathias Ibert, Emilie Josien, Herve Wyart
  • Publication number: 20140378691
    Abstract: A method for oxidizing 5-hydroxymethyl furaldehyde, includes at least one step of oxidation in the presence of an organic acid, a nitroxyl radical, an oxygen source, and an oxygen transfer agent.
    Type: Application
    Filed: December 18, 2012
    Publication date: December 25, 2014
    Applicant: ROQUETTE FRERES
    Inventors: Laurent Dambrine, Mathias Ibert
  • Patent number: 8871895
    Abstract: A process for manufacturing polycarbonate includes:—a step (1) of introducing into a reactor a particular composition (A) of at least one dianhydrohexitol carbonate bearing two alkyl carbonate functions; a step (2) of introducing a diol or a mixture of diols (B); a subsequent step (3) of polycondensation by transesterification of the mixture of monomers including (A) and (B); a step (4) of recovering the polycarbonate formed during step (3).
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: October 28, 2014
    Assignee: Roquette Freres
    Inventors: Mathias Ibert, Emilie Josien, Herve Wyart
  • Publication number: 20140158562
    Abstract: A dianhydrohexitol packaged in a packaging material that is impervious to gas, wherein the partial pressure of oxygen inside the packaging is 0.1 to 10 mbar, preferably 0.5 to 5 mbar, and more preferably 0.5 to 2 mbar. The method for packaging dianhydrohexitol, includes inserting the dianhydrohexitol into a packaging material that is impervious to gas, and then hermetically sealing the packaging, the method being carried out in an atmosphere that has a partial pressure of oxygen of 0.1 to 10 mbar, preferably 0.5 to 5 mbar, and more preferably 0.5 to 2 mbar.
    Type: Application
    Filed: August 3, 2012
    Publication date: June 12, 2014
    Applicant: ROQUETTE FRERES
    Inventors: Mathias Ibert, Herve Wyart
  • Publication number: 20140031517
    Abstract: A process for manufacturing a polycarbonate, having a glass transition temperature greater than or equal to 50° C., includes: ? a step (1) of introducing into a reactor a monomer of formula (I) and R1 and R2 being identical or different alkyl groups; ? a step (2) of introducing into the reactor at least one cyclic diol or a mixture of diols (B) including at least 20 mol % of cyclic diols; ? a subsequent step (3) of polycondensation via transesterification of the mixture of monomers including the monomers (A) and (B); ? a step (4) of recovering the polycarbonate formed during step (3).
    Type: Application
    Filed: April 5, 2012
    Publication date: January 30, 2014
    Applicant: Roquette Freres
    Inventors: Mathias Ibert, Emilie Josien, Herve Wyart
  • Publication number: 20140031516
    Abstract: A process for manufacturing polycarbonate includes:—a step (1) of introducing into a reactor a particular composition (A) of at least one dianhydrohexitol carbonate bearing two alkyl carbonate functions; a step (2) of introducing a diol or a mixture of diols (B); a subsequent step (3) of polycondensation by transesterification of the mixture of monomers including (A) and (B); a step (4) of recovering the polycarbonate formed during step (3).
    Type: Application
    Filed: April 5, 2012
    Publication date: January 30, 2014
    Applicant: ROQUETTE FRERES
    Inventors: Mathias Ibert, Emilie Josien, Herve Wyart
  • Publication number: 20130281718
    Abstract: Dianhydrohexitol pellets, whose fluidity is preserved even after lengthy storage, include between 90% and 100%, preferably between 95% and 100%, and more preferentially between 97% and 100% of dianhydrohexitols by weight, on a dry weight basis, and have the particularity of not being subject to caking. A process for preparing the dianhydrohexitol pellets is also described.
    Type: Application
    Filed: September 30, 2011
    Publication date: October 24, 2013
    Applicant: ROQUETTE FRERES
    Inventors: Mathias Ibert, Jerome Saint Pol, Herve Wyart